<template>
    <div style="position: relative;">
        <div class="verify-img-out">
            <div class="verify-img-panel" :style="{'width': setSize.imgWidth,
                                                   'height': setSize.imgHeight,
                                                   'background-size' : setSize.imgWidth + ' '+ setSize.imgHeight,
                                                   'margin-bottom': vSpace + 'px'}"
            >
                <div v-show="showRefresh" class="verify-refresh" style="z-index: 3;" @click="refresh">
                    <i class="iconfont icon-refresh" />
                </div>
                <img ref="canvas"
                     :src="'data:image/png;base64,'+pointBackImgBase"
                     alt="" style="width: 100%; height: 100%; display: block;"
                     @click="bindingClick?canvasClick($event):undefined"
                >

                <div v-for="(tempPoint, index) in tempPoints" :key="index" class="point-area"
                     :style="{
                         'background-color':'#1abd6c',
                         color:'#fff',
                         'z-index':9999,
                         width:'20px',
                         height:'20px',
                         'text-align':'center',
                         'line-height':'20px',
                         'border-radius': '50%',
                         position:'absolute',
                         top:parseInt(tempPoint.y-10) + 'px',
                         left:parseInt(tempPoint.x-10) + 'px'
                     }"
                >
                    {{ index + 1 }}
                </div>
            </div>
        </div>
        <!-- 'height': this.barSize.height, -->
        <div class="verify-bar-area"
             :style="{'width': setSize.imgWidth,
                      'color': this.barAreaColor,
                      'border-color': this.barAreaBorderColor,
                      'line-height':this.barSize.height}"
        >
            <span class="verify-msg">{{ text }}</span>
        </div>
    </div>
</template>
<script type="text/babel">
/**
     * VerifyPoints
     * @description 点选
     * */
import {resetSize, _code_chars, _code_color1, _code_color2} from './../utils/util'
import {aesEncrypt} from './../utils/ase'
import {reqGet, reqCheck}  from '../api/verifition-api'

export default {
    name: 'VerifyPoints',
    props: {
        // 弹出式pop，固定fixed
        mode: {
            type: String,
            default: 'fixed'
        },
        captchaType: {
            type: String
        },
        // 间隔
        vSpace: {
            type: Number,
            default: 5
        },
        imgSize: {
            type: Object,
            default() {
                return {
                    width: '310px',
                    height: '155px'
                }
            }
        },
        barSize: {
            type: Object,
            default() {
                return {
                    width: '310px',
                    height: '40px'
                }
            }
        }
    },
    data() {
        return {
            secretKey: '',           // 后端返回的ase加密秘钥
            checkNum: 3,             // 默认需要点击的字数
            fontPos: [],            // 选中的坐标信息
            checkPosArr: [],        // 用户点击的坐标
            num: 1,                 // 点击的记数
            pointBackImgBase: '',    // 后端获取到的背景图片
            poinTextList: [],        // 后端返回的点击字体顺序
            backToken: '',           // 后端返回的token值
            setSize: {
                imgHeight: 0,
                imgWidth: 0,
                barHeight: 0,
                barWidth: 0
            },
            tempPoints: [],
            text: '',
            barAreaColor: undefined,
            barAreaBorderColor: undefined,
            showRefresh: true,
            bindingClick: true
        }
    },
    computed: {
        resetSize() {
            return resetSize
        }
    },
    watch: {
        // type变化则全面刷新
        type: {
            immediate: true,
            handler() {
                this.init()
            }
        }
    },
    mounted() {
        // 禁止拖拽
        this.$el.onselectstart = function() {
            return false
        }
    },
    methods: {
        init() {
            // 加载页面
            this.fontPos.splice(0, this.fontPos.length)
            this.checkPosArr.splice(0, this.checkPosArr.length)
            this.num = 1
            this.getPictrue()
            this.$nextTick(() => {
                this.setSize = this.resetSize(this)	// 重新设置宽度高度
                this.$parent.$emit('ready', this)
            })
        },
        canvasClick(e) {
            this.checkPosArr.push(this.getMousePos(this.$refs.canvas, e))
            if (this.num == this.checkNum) {
                this.num = this.createPoint(this.getMousePos(this.$refs.canvas, e))
                // 按比例转换坐标值
                this.checkPosArr = this.pointTransfrom(this.checkPosArr, this.setSize)
                // 等创建坐标执行完
                setTimeout(() => {
                    // var flag = this.comparePos(this.fontPos, this.checkPosArr);
                    // 发送后端请求
                    var captchaVerification = this.secretKey ? aesEncrypt(this.backToken + '---' + JSON.stringify(this.checkPosArr), this.secretKey) : this.backToken + '---' + JSON.stringify(this.checkPosArr)
                    let data = {
                        captchaType: this.captchaType,
                        'pointJson': this.secretKey ? aesEncrypt(JSON.stringify(this.checkPosArr), this.secretKey) : JSON.stringify(this.checkPosArr),
                        'token': this.backToken
                    }
                    reqCheck(data).then(res => {
                        if (res.repCode == '0000') {
                            this.barAreaColor = '#4cae4c'
                            this.barAreaBorderColor = '#5cb85c'
                            this.text = '验证成功'
                            this.bindingClick = false
                            if (this.mode == 'pop') {
                                setTimeout(() => {
                                    this.$parent.clickShow = false
                                    this.refresh()
                                }, 1500)
                            }
                            this.$parent.$emit('success', {captchaVerification})
                        } else {
                            this.$parent.$emit('error', this)
                            this.barAreaColor = '#d9534f'
                            this.barAreaBorderColor = '#d9534f'
                            this.text = '验证失败'
                            setTimeout(() => {
                                this.refresh()
                            }, 700)
                        }
                    })
                }, 400)
            }
            if (this.num < this.checkNum) {
                this.num = this.createPoint(this.getMousePos(this.$refs.canvas, e))
            }
        },

        // 获取坐标
        getMousePos: function(obj, e) {
            var x = e.offsetX
            var y = e.offsetY
            return {x, y}
        },
        // 创建坐标点
        createPoint: function(pos) {
            this.tempPoints.push(Object.assign({}, pos))
            return ++this.num
        },
        refresh: function() {
            this.tempPoints.splice(0, this.tempPoints.length)
            this.barAreaColor = '#000'
            this.barAreaBorderColor = '#ddd'
            this.bindingClick = true
            this.fontPos.splice(0, this.fontPos.length)
            this.checkPosArr.splice(0, this.checkPosArr.length)
            this.num = 1
            this.getPictrue()
            this.text = '验证失败'
            this.showRefresh = true
        },

        // 请求背景图片和验证图片
        getPictrue() {
            let data = {
                captchaType: this.captchaType
            }
            reqGet(data).then(res => {
                if (res.repCode == '0000') {
                    this.pointBackImgBase = res.repData.originalImageBase64
                    this.backToken = res.repData.token
                    this.secretKey = res.repData.secretKey
                    this.poinTextList = res.repData.wordList
                    this.text = '请依次点击【' + this.poinTextList.join(',') + '】'
                } else {
                    this.text = res.repMsg
                }
            })
        },
        // 坐标转换函数
        pointTransfrom(pointArr, imgSize) {
            var newPointArr = pointArr.map(p => {
                let x = Math.round(310 * p.x / parseInt(imgSize.imgWidth))
                let y = Math.round(155 * p.y / parseInt(imgSize.imgHeight))
                return {x, y}
            })
            // console.log(newPointArr,"newPointArr");
            return newPointArr
        }
    }
}
</script>
